@article {454,
	title = {Nontwist symplectic maps in tokamaks},
	journal = {Communications in Nonlinear Science and Numerical Simulation},
	volume = {17},
	year = {2012},
	month = {Jan-05-2012},
	pages = {2021 - 2030},
	issn = {10075704},
	doi = {10.1016/j.cnsns.2011.05.040},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S1007570411002875http://api.elsevier.com/content/article/PII:S1007570411002875?httpAccept=text/xmlhttp://api.elsevier.com/content/article/PII:S1007570411002875?httpAccept=text/plain},
	author = {I. L. Caldas and R L Viana and J.D. Szezech and J. S. E. PORTELA and J. D. da Fonseca and M Roberto and Caroline G. L. Martins and da Silva, E.J.}
}
@article {501,
	title = {Tokamak magnetic field lines described by simple maps},
	journal = {The European Physical Journal Special Topics},
	volume = {165},
	year = {2008},
	month = {Jan-12-2008},
	pages = {195 - 210},
	issn = {1951-6355},
	doi = {10.1140/epjst/e2008-00863-y},
	url = {http://www.springerlink.com/index/10.1140/epjst/e2008-00863-yhttp://www.springerlink.com/index/pdf/10.1140/epjst/e2008-00863-y},
	author = {J. S. E. PORTELA and I. L. Caldas and R L Viana}
}
@article {515,
	title = {DIFFUSIVE TRANSPORT THROUGH A NONTWIST BARRIER IN TOKAMAKS},
	journal = {International Journal of Bifurcation and Chaos},
	volume = {17},
	year = {2007},
	month = {Jan-05-2007},
	pages = {1589 - 1598},
	issn = {0218-1274},
	doi = {10.1142/S0218127407017926},
	url = {http://www.worldscientific.com/doi/abs/10.1142/S0218127407017926http://www.worldscientific.com/doi/pdf/10.1142/S0218127407017926},
	author = {J. S. E. PORTELA and I. L. Caldas and R L Viana and P.J. Morrison}
}
@article {514,
	title = {FRACTAL AND WADA EXIT BASIN BOUNDARIES IN TOKAMAKS},
	journal = {International Journal of Bifurcation and Chaos},
	volume = {17},
	year = {2007},
	month = {Jan-11-2007},
	pages = {4067 - 4079},
	issn = {0218-1274},
	doi = {10.1142/S021812740701986X},
	url = {http://www.worldscientific.com/doi/abs/10.1142/S021812740701986Xhttp://www.worldscientific.com/doi/pdf/10.1142/S021812740701986X},
	author = {J. S. E. PORTELA and I. L. Caldas and R L Viana and M. A. F. Sanjuan}
}
@article {518,
	title = {Escaping and transport barrier due to ergodic magnetic limiters in tokamaks with reversed magnetic shear},
	journal = {Nuclear Fusion},
	volume = {46},
	year = {2006},
	month = {Jan-04-2006},
	pages = {S192 - S198},
	issn = {0029-5515},
	doi = {10.1088/0029-5515/46/4/S11},
	url = {http://stacks.iop.org/0029-5515/46/i=4/a=S11?key=crossref.a1b911854b8e5b3fe841f888acd49ce8},
	author = {Elton C. da Silva and M Roberto and J. S. E. PORTELA and I. L. Caldas and R L Viana}
}
@article {542,
	title = {Chaotic magnetic field lines in a Tokamak with resonant helical windings},
	journal = {Chaos, Solitons \& Fractals},
	volume = {11},
	year = {2003},
	month = {Jan-04-2000},
	pages = {765 - 778},
	issn = {09600779},
	doi = {10.1016/S0960-0779(98)00200-8},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0960077998002008http://api.elsevier.com/content/article/PII:S0960077998002008?httpAccept=text/xmlhttp://api.elsevier.com/content/article/PII:S0960077998002008?httpAccept=text/plain},
	author = {J. S. E. PORTELA and R L Viana and I. L. Caldas}
}
